After the top results had been announced, there was still another part of the exam that was left.
This was a school that fostered and encouraged competition among the students, so everything they did had that in mind. The top results were an example of this, but they also took things a bit farther than that.
After the results had been announced, there was a free challenge period.
This was when people that got lower ranks were able to challenge those that had higher ranks. As long as they defeated the people with higher ranks, they would take those ranks for themselves. The ones with higher ranks that lost would be demoted down to those lower ranks and wouldn't have a chance to challenge anyone, so they would be stuck with these lower ranks.
Naturally, Jun Xie who was in first place was someone that had a big target on his back.
However, no one dared to rush into this because they didn't know just how strong Jun Xie was.